{
  "ptid_time": "035_S_0555_2009-04-29",
  "img_path": "/data/qiuhui/data/adni/images/035_S_0555/2009-04-29/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 84,342 mm³, 119.0% above the reference mean. With a Z-score of 2.85 (99.8th percentile), this represents significant enlargement; whole brain volume measures 1,127,820 mm³, 4.5% above the reference mean. With a Z-score of 0.58 (72.0th percentile), this represents normal volume . ",
  "text_data": "Age is 79.0 years. Gender is Male. Education: 16 years. MMSE: 30.0. Logical Memory: 13.0. APOEε4 alleles: 1.0. Biomarker levels: Amyloid beta: 440.80 pg/mL (moderate reduced); Total tau: 185.20 pg/mL (normal ); Phosphorylated tau: 17.97 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume is significantly enlarged (Z-score 2.85), suggesting atrophy, while whole brain volume is normal. Aβ is moderately reduced, indicating amyloid pathology, but cognitive function (MMSE 30) remains intact.  \n**Diagnosis:** **MCI** (early neurodegenerative changes with preserved cognition)  \n**Confidence:** **Medium** (normal MMSE complicates the diagnosis, but amyloid and ventricular changes suggest progression risk)",
  "timestamp": "2025-07-26T05:48:00.511107"
}